Thermocouple Temperature Alarms

lifetime warranty
  • Lifetime Warranty on API Modules
  • LoopTracker® Input LED
  • Alarm Status LEDs
  • Hot-Swappable Plug-In Design
  • User Adjustable Setpoint(s)
  • Push to Test/Reset Alarms
  • Full I/O/Power Isolation
Click on PDF links below
for product information

Literature and Links

API product brochure
Options & accessories
Cross reference
See all RTD input products
See all thermocouple input products
Regulatory Compliance page

Reference Info

Thermocouple sensors

Alarm terminology & deadband

Relay protection & EMI suppression

Installation FAQs



Oven overtemp shutdown

Monitor chillers and freezers

How to Order

  1. Select a model
  2. See data sheet for ordering info and options
  3. Note that options affect pricing
  4. Request a quote via chat or call us
  5. 2-5 day typical lead time + shipping time
  6. 5-10 day lead time for quantities of 5 or more + shipping time
  7. To place your order
Model Input/Output Features Product

Thermocouple Input Alarm Trips

Factory Configured

New Versions 12-11-2018
API 1200 G  from $279
API 1220 G  from $299

Open Datasheet
Download Datasheet

Old Version
API 1200 G (discontinued)
API 1220 G (a few left)

Open Datasheet
Download Datasheet
Specify T/C type and
°F or °C temperature range

Factory configured
Thermocouple J, K, T, E, R, S, N, B, C, D, G, M, P
100°F (55°C) recommended minimum span

API 1200 G Single Alarm Trip
One DPDT contact set
Standard: HI alarm, normal acting,
set/reset adjustments, non-latching
See data sheet for alarm options

API 1220 G Dual Alarm Trip
Two SPDT contact sets
Standard: HI/LO alarms, normal acting,
two set/reset adjustments, non-latching
See data sheet for alarm options

  • New version
    • Complete thermocouple selection
    • Microprocessor controlled input linearization
    • More burnout options
    • Improved setpoint/reset point control
  • User adjustable set and reset point(s)
  • 8 Amp contacts
  • Hot-swappable plug-in design
  • Replaces Action AP 1200 and AP 1220
  • Input LoopTracker LED and output test button
  • Alarm status LEDs
  • Alarm options: LO, HI/HI, LO/LO
  • Optional reverse acting, optional latching
  • Uses API-011 11-pin socket
  • 115 VAC powered
  • A230 option for 230 VAC
  • P option for 85-265 VAC, 60-300 VDC power
  • D option for 9-30 VDC power

Api 1200G
API 1200 G, API 1220 G